| (19) |
 |
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(11) |
EP 0 947 526 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
07.03.2001 Bulletin 2001/10 |
| (43) |
Date of publication A2: |
|
06.10.1999 Bulletin 1999/40 |
| (22) |
Date of filing: 24.03.1999 |
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| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
31.03.1998 JP 8523598
|
| (71) |
Applicant: Nippon Shokubai Co., Ltd. |
|
Osaka-shi, Osaka 541-0043 (JP) |
|
| (72) |
Inventors: |
|
- Hitomi, Kazuhisa
Himeji-shi, Hyogo 670-0955 (JP)
- Yamamoto, Yuji
Himeji-shi, Hyogo 671-1242 (JP)
- Kirimura, Shigenori
Himeji-shi, Hyogo 671-1242 (JP)
- Harada, Nobuyuki
Suita-shi, Osaka 565-0821 (JP)
|
| (74) |
Representative: Henkel, Feiler, Hänzel |
|
Möhlstrasse 37
81675 München
81675 München (DE) |
|
| |
|
| (54) |
Water-absorbing composition and production process for water-absorbing agent |
(57) The present invention has an object to provide a process for producing a water-absorbing
agent which is excellent in the absorption capacities under no load and under a load
with good balance and can display excellent absorption properties even if the weight
percentage of a water-absorbent resin (resin concentration) is high when the water-absorbent
resin is used for materials such as sanitary materials. The above object can be achieved
by adding a vinyl compound or both the vinyl compound and a polyhydric alcohol to
a water-absorbent resin and heating the resultant mixture.